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Ink composition

a technology of composition and ink, applied in the field of ink composition, can solve the problems of increased manufacturing cost, bleeding or beading unevenness in images, poor ink-absorbing ability of the coating layer against aqueous ink, etc., and achieve the effect of excellent storage stability of ink

Active Publication Date: 2012-03-29
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an ink composition that can create high-quality images without bleeding or beading on various recording media, including non- or low absorbable ones such as synthetic paper and printing paper. Additionally, the ink composition has excellent storage stability. This is achieved by using a slightly water-soluble alkanediol with 7 to 10 carbon atoms and a cyclodextrin compound.

Problems solved by technology

However, production of exclusive paper that can respond to all of the various types of printing paper causes an increase in manufacturing cost.
The printing paper is coated paper having a coating layer on the surface for receiving oil-based ink and has a characteristic that the coating layer is poor in ink-absorbing ability against aqueous ink.
Therefore, in the use of aqueous pigment ink, which is usually used in ink jet recording, bleeding or beading unevenness may occur in an image because of low permeability of the ink into the recording medium (printing paper).

Method used

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examples

[0157]The invention will be described by Examples in detail, but is not limited to Examples.

Preparation of Ink Composition

[0158]Respective components were mixed according to the composition of the following Table 1, and filtered with a 10 μm membrane filter to prepare respective inks. The numerical value in the following Table 1 represents content (% by mass) in ink. Further, resin represents content (% by mass) of solid. Further, trehalose in the following Table 1 is TREHA fine powder manufactured by Hayashibara Shoji Inc. A surfactant in Examples and Comparative Examples is polyorganosiloxane-based surfactant. The surfactant consists of a compound (surfactant (1)) where, in the formula (I), R is a methyl group, a is an integer of 6 to 18, m is an inter of 0, n is an integer of 1; a compound (surfactant (2)) where, in the formula (I), R is a hydrogen atom, a is an integer of 7 to 11, m is an inter of 30 to 50, n is an integer of 3 to 5; a compound (surfactant (3)) where, in the for...

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Abstract

An ink composition includes a slightly water-soluble alkanediol having 7 to 10 carbon atoms and cyclodextrin compound.

Description

[0001]The entire disclosure of Japanese Application No.: 2010-217276 filed on Sep. 28, 2010 is expressly incorporated by reference herein.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to an ink composition capable of obtaining a high quality recording matter even on various recording media, particularly non- or low absorbable recording media such as synthetic paper or printing paper.[0004]2. Related Art[0005]An ink jet recording method is a printing method for printing by letting ink droplets fly and attach to a recording medium such as paper. According to recent innovative progress in ink jet recording technology, the ink jet recording method has been also used in the field of highly fine printing that was achieved by silver halide photography or offset printing before. With this, an ink for ink jet recording has been developed so that an image having glossiness similar to that achieved by silver halide photography can be formed by the ink jet recording on s...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C09D11/14B41J2/01B41M5/00C09D11/00C09D11/326C09D11/38
CPCC09D11/322C09D11/40C09D11/38
Inventor KOGANEHIRA, SHUICHIYAMAMOTO, SHINICHI
Owner SEIKO EPSON CORP